Origin: 1250–1300; ME
byldinge. See build, -ing 1 
Related forms: build⋅ing⋅less, adjective
Synonyms:
1. Building, edifice, structure refer to something built. Building and structure may apply to either a finished or an unfinished product of construction, and carry no implications as to size or condition. Edifice is a more formal word and narrower in application, referring to a completed structure, and usually a large and imposing one. Building generally connotes a useful purpose (houses, schools, business offices, etc.); structure suggests the planning and constructive process.